Whatever you get, make sure its in a easily accessible area that is also easy to explain/identify in a panic.

A while back while working on a friends xj my buddy got to close to the plastic fuel line with the plasma (knew it was there but didn't realize it was plastic)...it melted, big fire, jeep was on the hoist....he's yelling that the extinguishers are by the window, but there were multiple windows so i'm running like a fool from window to window trying to find them.

I have a single fire extinguisher in my garage, which probably isn't enough. Getting more has been on my "to do" list for a long time but never gets done. My 100ft garden hose is 10ft from the door, but that wouldn't be the quickest option by the time I turn it on and drag it in there. Definitely gonna have to use the bucket idea too.